Forget everything you think you know about global warming. The really inconvenient truth is that it’s not about carbon — it’s about capitalism. The convenient truth is that we can seize this existential crisis to transform our failed system and build something radically better. In her most provocative talk yet, Naomi Klein tackles the most profound threat humanity has ever faced: the war our economic model is waging against life on earth.

We have been told that humanity is too greedy and selfish to rise to this challenge. In fact, all around the world, the fight back is already succeeding in ways both surprising and inspiring. Climate change, Klein argues, is a civilizational wake-up call, a powerful message delivered in the language of fires, floods, storms, and droughts. Confronting it is no longer about changing the light bulbs. It’s about changing the world — before the world changes so drastically that no one is safe. Either we leap — or we sink.